SB358-SA2,24,1413 1. Multiply the amount determined under sub. (6) (i) for the corporation by the
14tax rate under s. 71.27 or 71.46, as appropriate.
SB358-SA2,24,1915 2. From the amount determined under subd. 1., subtract the corporation's tax
16credits under s. 71.28 or 71.47 based on the corporation's expenses. The corporation
17may not offset any of its tax credits, or tax credit carry-forwards, against the tax
18liability of any other member of the combined reporting group to which the
19corporation belongs.
SB358-SA2,24,2120 (b) A combined reporting group that files a group return under this section shall
21determine its net tax liability as follows:
SB358-SA2,24,2322 1. Multiply the amount determined under sub. (6) (i) for the combined reporting
23group by the tax rate under s. 71.27 or 71.46, as appropriate.
SB358-SA2,24,2524 2. From the amount determined under subd. 1., subtract the tax credits under
25ss. 71.28 and 71.47 for all taxpayer members of the combined reporting group.
SB358-SA2,25,7
1(11) Estimated tax payments. (a) For the first 2 taxable years that a group
2return is filed under this section, estimated taxes under ss. 71.29 and 71.48 may be
3paid on a group basis or on a separate basis. The amount of any separate estimated
4taxes paid in the first 2 taxable years that a group return is filed shall be credited
5against the group's tax liability. The designated agent shall notify the department
6of any estimated taxes paid on a separate basis in the first 2 taxable years that a
7group return is filed.
SB358-SA2,25,208 (b) If a group return is filed for 2 consecutive taxable years, estimated taxes
9under ss. 71.29 and 71.48 shall be paid on a group basis for each subsequent taxable
10year until such time as separate returns are filed by the corporations that were
11members of a combined reporting group that filed group returns under this section.
12For each taxable year in which combined estimated taxes are paid under this
13subsection, the department shall consider the combined reporting group filing a
14group return to be one taxpayer for purposes of computing interest on the
15underpayment of estimated taxes. If a corporation subject to this section files a
16separate return in a taxable year following a year in which the corporation joined in
17filing a group return, the amount of any estimated tax payments made on a group
18basis for the previous year shall be credited against the tax liability of the corporation
19that files a separate return, as allocated by the designated agent with the
20department's approval.
SB358-SA2,25,2521 (c) If a combined reporting group pays estimated taxes on a group basis for a
22taxable year or for any part of a taxable year, and the members of the combined
23reporting group file separate returns for the taxable year, the designated agent, with
24the department's approval, shall allocate the estimated tax payments among the
25members of the combined reporting group.
SB358-SA2,26,5
1(d) If estimated taxes are paid on a group basis for a taxable year but the group
2does not file a group return for the taxable year and did not file a group return for
3the previous taxable year, the estimated tax shall be credited to the member of the
4combined reporting group that made the estimated tax payment on the group's
5behalf.
SB358-SA2,26,86 (e) If a combined reporting group that will file a group return applies for a
7refund of estimated taxes under s. 71.29 (3m), the department shall determine the
8combined reporting group's eligibility for a refund on a group basis.
SB358-SA2,26,11 9(12) Interest for underpayment of estimated tax. (a) General. The amount
10of interest that is due for an underpayment of estimated taxes under sub. (11) shall
11be computed as follows:
SB358-SA2,26,1512 1. For the first year in which a combined reporting group files a group return,
13the amount of interest that is due for an underpayment of estimated taxes shall be
14determined by using the aggregate of the tax and income shown on the returns filed
15by the members of the combined reporting group for the previous year.
SB358-SA2,26,2016 2. For any year in which a combined reporting group files a group return, the
17department shall determine if the combined reporting group qualifies for the
18exception to interest under s. 71.29 (7) (b) by using the aggregate of the amount of
19the tax liability and the amount of the net income of all members of the combined
20reporting group.
SB358-SA2,26,2521 3. For any year in which a combined reporting group files a group return, the
22department shall determine if the installment provisions under s. 71.29 (9) or (10)
23apply to the combined reporting group by using the aggregate of the amount of the
24tax liability and the amount of the net income of all members of the combined
25reporting group.
SB358-SA2,27,7
14. For estimated taxes paid under sub. (11) (c), the amount of interest that is
2due from a member of a combined reporting group for an underpayment of estimated
3taxes paid by the member shall be determined by using the member's separate items
4from the group return filed for the previous year and the member's allocated share
5of the combined estimated tax payments for the current year. The designated agent
6shall report the member's allocated share of the combined estimated tax payments
7for the current year to the department, in the manner prescribed by the department.
SB358-SA2,27,118 (b) Entering a group. If a corporation becomes a member of a combined
9reporting group during a common accounting period under sub. (4), the combined
10reporting group shall make the following adjustments to determine the amount of
11interest that is due for an underpayment of estimated taxes:
SB358-SA2,27,1612 1. If a corporation becomes a member of a combined reporting group at the
13beginning of a common accounting period, the combined reporting group shall
14include with the corresponding items on the group return for the previous common
15accounting period the separate items shown on the corporation's return for the
16previous taxable year.
SB358-SA2,27,2117 2. If a corporation is not a member of a combined reporting group for an entire
18common accounting period, the combined reporting group shall include with the
19corresponding items on the group return for the current taxable year the
20corporation's separate items for that portion of the common accounting period that
21the corporation was not a member of the combined reporting group.
SB358-SA2,28,222 3. To determine the separate items under subds. 1. and 2., if a corporation is
23a member of a combined reporting group during a portion of a common accounting
24period in which the corporation becomes a member of another combined reporting
25group, the corporation's separate items shall include the separate items that are

1attributed to the corporation by the designated agent of the first combined reporting
2group.
SB358-SA2,28,63 (c) Leaving a group. If a corporation leaves a combined reporting group during
4a common accounting period under sub. (4), the combined reporting group shall make
5the following adjustments to determine the amount of interest that is due for an
6underpayment of estimated taxes:
SB358-SA2,28,117 1. If a corporation leaves a combined reporting group before the first day of a
8common accounting period, the combined reporting group shall exclude the separate
9items that the designated agent of the combined reporting group attributed to the
10corporation for the preceding common accounting period from the corresponding
11items of the combined reporting group for the preceding common accounting period.
SB358-SA2,28,1612 2. If a corporation leaves a combined reporting group after the first day of a
13common accounting period, the combined reporting group shall exclude the separate
14items that the designated agent of the combined reporting group attributed to the
15corporation for the common accounting period from the corresponding items of the
16combined reporting group for the current common accounting period.
SB358-SA2,28,2417 3. A corporation that leaves a combined reporting group shall use the separate
18items that the designated agent of the combined reporting group attributed to the
19corporation to determine the amount of interest that is owed for any underpayment
20of estimated taxes under sub. (11) for the first taxable year beginning after the day
21that the corporation leaves the combined reporting group or, for a corporation that
22has a different accounting period from the combined reporting group, for the portion
23of the corporation's separate taxable year that remains after the day that the
24corporation leaves the combined reporting group.
SB358-SA2,29,16
1(13) Assessment notice. If the department sends a notice of taxes that are
2owed by a combined reporting group to the designated agent of a combined reporting
3group, the notice shall name each corporation that joined in filing the group return
4related to the notice during any part of the period covered by the notice. The
5department's failure to name a corporation on a notice under this subsection shall
6not invalidate the notice as to the unnamed corporation. Any levy, lien, or other
7proceeding to collect the amount of a tax assessment under this section shall name
8the corporation from which the department shall collect the assessment. If a
9corporation that joined in the filing of a group return leaves the combined reporting
10group, the department shall send the corporation a copy of any notice sent to the
11combined reporting group under this subsection if the corporation notifies the
12department that the corporation is no longer a member of the combined reporting
13group and if the corporation requests in writing that the department send notices
14under this subsection to the corporation. The department's failure to comply with
15a corporation's request to receive a notice does not affect the tax liability of the
16corporation.
SB358-SA2,29,22 17(14) Liability for tax, interest, and penalty. If members of a combined
18reporting group file a group return, the members of the combined reporting group
19shall be jointly and severally liable for any combined tax, interest, or penalty. The
20liability of a member of a combined reporting group for any combined tax, interest,
21or penalty shall not be reduced by an agreement with another member of the
22combined reporting group or by an agreement with another person.
SB358-SA2,30,3 23(15) Presumptions and burden of proof. A commonly controlled group shall
24be presumed to be engaged in a unitary business and all of the income of the unitary
25business shall be presumed to be apportionable business income under this section.

1A corporation, partnership, or limited liability company has the burden of proving
2that it is not a member of a commonly controlled group that is subject to this section.
3The department shall promulgate rules to implement this subsection.
SB358-SA2,30,8 4(16) Information. (a) A member of a commonly controlled group shall retain
5any information, and provide such information to the department at the
6department's request, that the department considers necessary to administer this
7section, including all documents submitted to or obtained from the Internal Revenue
8Service or other states regarding income and taxing jurisdiction.
SB358-SA2,30,139 (b) A member of a commonly controlled group shall identify, at the department's
10request, the name, job title, and address of the member's principal officers or
11employees who have substantial knowledge of, and access to, documents that specify
12the pricing policies, profit centers, cost centers, and methods of allocating income and
13expenses among cost centers related to the operations of the member.
SB358-SA2,30,1814 (c) A member of a commonly controlled group shall retain all information
15provided under par. (a) during any period for which the member's tax liability to this
16state is subject to adjustment, including any period in which the state may assess
17additional income or franchise taxes, an appeal of the member's tax assessment is
18pending, or a suit related to the member's tax liability is pending.
SB358-SA2,30,23 19(17) Corporations not filing. If a corporation that is required to report under
20this section directly or indirectly owns or controls any other corporation, or is directly
21or indirectly owned or controlled by another corporation, the department may
22require that such other corporations join in filing a combined report under this
23section.
SB358-SA2, s. 1k 24Section 1k. 71.26 (3) (x) of the statutes is amended to read:
SB358-SA2,31,5
171.26 (3) (x) Sections 1501 to 1505, 1551, 1552, 1563 and 1564 (relating to
2consolidated returns) are excluded, except to the extent that they pertain to
3intercompany transactions and the carry-forward of net business loss under s.
471.255 and except that they are modified so that more than 50 percent ownership is
5substituted for at least 80 percent ownership
.
SB358-SA2, s. 1L 6Section 1L. 71.26 (4) of the statutes is amended to read:
SB358-SA2,31,237 71.26 (4) A corporation, except a tax-option corporation or an insurer to which
8s. 71.45 (4) applies, may offset against its Wisconsin net business income any
9Wisconsin net business loss sustained in any of the next 15 preceding taxable years,
10if the corporation was subject to taxation under this chapter in the taxable year in
11which the loss was sustained, to the extent not offset by other items of Wisconsin
12income in the loss year and by Wisconsin net business income of any year between
13the loss year and the taxable year for which an offset is claimed. For purposes of this
14subsection Wisconsin net business income or loss shall consist of all the income
15attributable to the operation of a trade or business in this state, less the business
16expenses allowed as deductions in computing net income. The Wisconsin net
17business income or loss of corporations engaged in business within and without the
18state shall be determined under s. 71.25 (6) and (10) to (12) or 71.255.
19Nonapportionable losses having a Wisconsin situs under s. 71.25 (5) (b) shall be
20included in Wisconsin net business loss; and nonapportionable income having a
21Wisconsin situs under s. 71.25 (5) (b), whether taxable or exempt, shall be included
22in other items of Wisconsin income and Wisconsin net business income for purposes
23of this subsection.
SB358-SA2, s. 1m 24Section 1m. 71.29 (2) of the statutes is amended to read:
SB358-SA2,32,3
171.29 (2) Who shall pay. Every Except as provided in s. 71.255 (11), every
2corporation subject to tax under s. 71.23 (1) or (2) and every virtually exempt entity
3subject to tax under s. 71.125 or 71.23 (1) or (2) shall pay an estimated tax.
SB358-SA2, s. 1n 4Section 1n. 71.44 (1) (a) of the statutes is amended to read:
SB358-SA2,32,225 71.44 (1) (a) Every Except as provided in par. (e), every corporation, except
6corporations all of whose income is exempt from taxation and except as provided in
7sub. (1m), shall furnish to the department a true and accurate statement, on or before
8March 15 of each year, except that returns for fiscal years ending on some other date
9than December 31 shall be furnished on or before the 15th day of the 3rd month
10following the close of such fiscal year and except that returns for less than a full
11taxable year shall be furnished on or before the date applicable for federal income
12taxes under the internal revenue code, in such manner and form and setting forth
13such facts as the department deems necessary to enforce this chapter. Every
14corporation that is required to furnish a statement under this paragraph and that
15has income that is not taxable under this subchapter shall include with its statement
16a report that identifies each item of its nontaxable income. The statement shall be
17subscribed by the president, vice president, treasurer, assistant treasurer, chief
18accounting officer or any other officer duly authorized so to act. In the case of a return
19made for a corporation by a fiduciary, the fiduciary shall subscribe the return. The
20fact that an individual's name is subscribed on the return shall be prima facie
21evidence that the individual is authorized to subscribe the return on behalf of the
22corporation.
SB358-SA2, s. 1o 23Section 1o. 71.44 (1) (e) of the statutes is created to read:
SB358-SA2,33,3
171.44 (1) (e) A corporation that is a member of a commonly controlled group,
2as defined in s. 71.255 (1) (d), and engaged in a unitary business, as defined in s.
371.255 (1) (m), shall file a tax return under s. 71.255.
SB358-SA2, s. 1p 4Section 1p. 71.46 (3) of the statutes is repealed.
SB358-SA2, s. 1q 5Section 1q. 71.48 of the statutes is amended to read:
SB358-SA2,33,8 671.48 Payments of estimated taxes. Sections Except as provided in s.
771.255 (11), ss.
71.29 and 71.84 (2) shall apply to insurers subject to taxation under
8this chapter.
SB358-SA2, s. 1r 9Section 1r. 71.84 (2) (a) of the statutes is amended to read:
SB358-SA2,33,2010 71.84 (2) (a) Except as provided in s. 71.29 (7), in the case of any underpayment
11of estimated tax under s. 71.255, 71.29 or 71.48 there shall be added to the aggregate
12tax for the taxable year interest at the rate of 12% per year on the amount of the
13underpayment for the period of the underpayment. For corporations, except as
14provided in par. (b), "period of the underpayment" means the time period from the
15due date of the installment until either the 15th day of the 3rd month beginning after
16the end of the taxable year or the date of payment, whichever is earlier. If 90% of the
17tax shown on the return is not paid by the 15th day of the 3rd month following the
18close of the taxable year, the difference between that amount and the estimated taxes
19paid, along with any interest due, shall accrue delinquent interest under s. 71.91 (1)
20(a).".
SB358-SA2,33,21 214. Page 2, line 1: delete " Section 1" and substitute "Section 1s".
SB358-SA2,33,22 225. Page 3, line 14: after that line insert:
SB358-SA2,33,23 23" Section 1t. Initial applicability.
SB358-SA2,34,4
1(1) The treatment of sections 20.835 (2) (bm), 71.05 (6) (a) 15., 71.07 (5e), 71.08
2(1) (intro.), 71.10 (4) (gxx), 71.23 (2) and (4), 71.25 (9) (a), 71.255, 71.26 (3) (x) and (4),
371.29 (2), 71.44 (1) (a) and (e), 71.46 (3), 71.48, and 71.84 (2) (a) of the statutes first
4applies to taxable years beginning on January 1, 2006.".
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